The Assay Office Mark (this is the mark of the Assay Office which tested the item)

A hallmark can also include:

A symbol to confirm the metal (a crown for gold)

The date the piece of jewellery was made.

United Kingdom Gold Hallmarks

United Kingdom Silver Hallmarks

United Kingdom Platinum Hallmarks

The carat of gold can be determined from the fineness marking e.g. 9ct Gold = 375 parts pure gold out of a 1000, 14ct Gold = 585 parts pure gold out of a 1000, 18ct Gold = 750 parts pure gold out of a 1000 and 22ct Gold = 916 parts pure gold out of a 1000. The hallmark is generally situated in a place where it will not be seen when the item is worn. For example, on a gold ring it will be on the inside of the ring or on a gold chain, it is generally located close to the clasp.